./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af383046837f49b57572febe7198ecca5fffa750 ............................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af383046837f49b57572febe7198ecca5fffa750 ................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:20:50,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:20:50,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:20:50,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:20:50,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:20:50,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:20:50,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:20:50,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:20:50,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:20:50,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:20:50,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:20:50,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:20:50,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:20:50,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:20:50,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:20:50,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:20:50,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:20:50,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:20:50,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:20:50,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:20:50,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:20:50,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:20:50,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:20:50,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:20:50,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:20:50,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:20:50,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:20:50,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:20:50,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:20:50,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:20:50,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:20:50,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:20:50,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:20:50,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:20:50,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:20:50,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:20:50,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:20:50,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:20:50,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:20:50,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:20:50,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:20:50,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:20:50,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:20:50,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:20:50,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:20:50,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:20:50,292 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:20:50,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:20:50,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:20:50,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:20:50,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:20:50,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:20:50,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:20:50,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:20:50,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:20:50,294 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:20:50,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:20:50,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:20:50,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:20:50,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:20:50,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:20:50,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:20:50,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:20:50,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:20:50,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:20:50,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:20:50,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:20:50,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:20:50,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:20:50,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:20:50,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:20:50,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af383046837f49b57572febe7198ecca5fffa750 [2020-07-28 17:20:50,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:20:50,661 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:20:50,665 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:20:50,666 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:20:50,667 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:20:50,667 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-07-28 17:20:50,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db419f831/42dd6a32eeab43acb811db784ce8e3f2/FLAG75c4780f8 [2020-07-28 17:20:51,186 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:20:51,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-07-28 17:20:51,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db419f831/42dd6a32eeab43acb811db784ce8e3f2/FLAG75c4780f8 [2020-07-28 17:20:51,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db419f831/42dd6a32eeab43acb811db784ce8e3f2 [2020-07-28 17:20:51,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:20:51,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:20:51,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:20:51,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:20:51,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:20:51,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:20:51" (1/1) ... [2020-07-28 17:20:51,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6f491f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:51, skipping insertion in model container [2020-07-28 17:20:51,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:20:51" (1/1) ... [2020-07-28 17:20:51,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:20:51,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:20:51,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:20:51,852 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:20:51,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:20:51,898 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:20:51,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:51 WrapperNode [2020-07-28 17:20:51,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:20:51,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:20:51,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:20:51,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:20:51,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:51" (1/1) ... [2020-07-28 17:20:51,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:51" (1/1) ... [2020-07-28 17:20:52,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:20:52,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:20:52,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:20:52,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:20:52,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:51" (1/1) ... [2020-07-28 17:20:52,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:51" (1/1) ... [2020-07-28 17:20:52,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:51" (1/1) ... [2020-07-28 17:20:52,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:51" (1/1) ... [2020-07-28 17:20:52,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:51" (1/1) ... [2020-07-28 17:20:52,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:51" (1/1) ... [2020-07-28 17:20:52,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:51" (1/1) ... [2020-07-28 17:20:52,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:20:52,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:20:52,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:20:52,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:20:52,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:20:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-28 17:20:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:20:52,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:20:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 17:20:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:20:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:20:52,422 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:20:52,423 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 17:20:52,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:52 BoogieIcfgContainer [2020-07-28 17:20:52,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:20:52,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:20:52,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:20:52,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:20:52,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:20:51" (1/3) ... [2020-07-28 17:20:52,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be58959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:20:52, skipping insertion in model container [2020-07-28 17:20:52,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:51" (2/3) ... [2020-07-28 17:20:52,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be58959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:20:52, skipping insertion in model container [2020-07-28 17:20:52,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:52" (3/3) ... [2020-07-28 17:20:52,436 INFO L109 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2020-07-28 17:20:52,446 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:20:52,452 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:20:52,465 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:20:52,488 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:20:52,488 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:20:52,488 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:20:52,488 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:20:52,488 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:20:52,489 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:20:52,489 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:20:52,489 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:20:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-07-28 17:20:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-28 17:20:52,508 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:20:52,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-28 17:20:52,509 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:20:52,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:20:52,516 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-07-28 17:20:52,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:20:52,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584079700] [2020-07-28 17:20:52,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:20:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:20:52,619 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:20:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:20:52,638 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:20:52,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:20:52,651 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.model.Model.map(Model.java:227) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.cclosure.ModelBuilder.add(ModelBuilder.java:123) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.cclosure.ModelBuilder.fillInFunctions(ModelBuilder.java:109) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.cclosure.ModelBuilder.(ModelBuilder.java:49) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.cclosure.CClosure.fillInModel(CClosure.java:1312) at de.uni_freiburg.informatik.ultimate.smtinterpol.model.Model.(Model.java:120) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.buildModel(SMTInterpol.java:1139) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getValue(SMTInterpol.java:1004) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getValue(WrapperScript.java:193) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getValue(WrapperScript.java:193) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.getValues(SmtUtils.java:2112) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.getValue(TraceCheck.java:401) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.lambda$0(TraceCheck.java:375) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.computeRcfgProgramExecution(TraceCheck.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:343) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:223) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.computeRcfgProgramExecutionAndDecodeBranches(TraceCheck.java:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:223) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-28 17:20:52,659 INFO L168 Benchmark]: Toolchain (without parser) took 1035.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -128.2 MB). Peak memory consumption was 8.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:52,659 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:20:52,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.88 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:52,662 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -176.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:52,662 INFO L168 Benchmark]: Boogie Preprocessor took 45.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:52,663 INFO L168 Benchmark]: RCFGBuilder took 375.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:52,664 INFO L168 Benchmark]: TraceAbstraction took 228.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:52,668 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 270.88 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 104.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -176.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 375.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 228.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.model.Model.map(Model.java:227) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:20:54,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:20:54,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:20:54,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:20:54,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:20:54,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:20:54,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:20:54,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:20:54,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:20:54,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:20:54,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:20:54,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:20:54,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:20:54,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:20:54,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:20:54,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:20:54,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:20:54,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:20:54,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:20:54,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:20:54,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:20:54,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:20:54,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:20:54,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:20:54,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:20:54,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:20:54,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:20:54,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:20:54,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:20:54,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:20:54,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:20:54,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:20:54,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:20:54,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:20:54,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:20:54,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:20:54,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:20:54,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:20:54,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:20:54,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:20:54,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:20:54,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:20:54,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:20:54,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:20:54,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:20:54,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:20:54,617 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:20:54,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:20:54,618 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:20:54,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:20:54,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:20:54,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:20:54,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:20:54,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:20:54,620 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:20:54,620 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:20:54,620 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:20:54,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:20:54,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:20:54,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:20:54,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:20:54,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:20:54,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:20:54,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:20:54,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:20:54,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:20:54,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:20:54,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:20:54,624 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:20:54,624 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:20:54,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:20:54,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:20:54,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:20:54,625 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af383046837f49b57572febe7198ecca5fffa750 [2020-07-28 17:20:54,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:20:54,951 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:20:54,957 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:20:54,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:20:54,958 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:20:54,959 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-07-28 17:20:55,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2d6b508e/62b46bec89f7447fbc98062942547136/FLAGc5f07a300 [2020-07-28 17:20:55,454 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:20:55,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-zero-sum1.i [2020-07-28 17:20:55,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2d6b508e/62b46bec89f7447fbc98062942547136/FLAGc5f07a300 [2020-07-28 17:20:55,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2d6b508e/62b46bec89f7447fbc98062942547136 [2020-07-28 17:20:55,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:20:55,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:20:55,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:20:55,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:20:55,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:20:55,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:20:55" (1/1) ... [2020-07-28 17:20:55,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e2c6c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:55, skipping insertion in model container [2020-07-28 17:20:55,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:20:55" (1/1) ... [2020-07-28 17:20:55,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:20:55,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:20:56,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:20:56,074 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:20:56,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:20:56,126 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:20:56,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56 WrapperNode [2020-07-28 17:20:56,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:20:56,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:20:56,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:20:56,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:20:56,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:20:56,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:20:56,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:20:56,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:20:56,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... [2020-07-28 17:20:56,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:20:56,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:20:56,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:20:56,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:20:56,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:20:56,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-07-28 17:20:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:20:56,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:20:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-07-28 17:20:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:20:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:20:56,565 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:20:56,565 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-28 17:20:56,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:56 BoogieIcfgContainer [2020-07-28 17:20:56,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:20:56,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:20:56,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:20:56,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:20:56,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:20:55" (1/3) ... [2020-07-28 17:20:56,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39898b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:20:56, skipping insertion in model container [2020-07-28 17:20:56,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:20:56" (2/3) ... [2020-07-28 17:20:56,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39898b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:20:56, skipping insertion in model container [2020-07-28 17:20:56,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:56" (3/3) ... [2020-07-28 17:20:56,579 INFO L109 eAbstractionObserver]: Analyzing ICFG float-zero-sum1.i [2020-07-28 17:20:56,593 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:20:56,601 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:20:56,616 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:20:56,638 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:20:56,639 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:20:56,639 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:20:56,639 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:20:56,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:20:56,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:20:56,640 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:20:56,640 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:20:56,655 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-07-28 17:20:56,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-28 17:20:56,664 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:20:56,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-28 17:20:56,665 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:20:56,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:20:56,671 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-07-28 17:20:56,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:20:56,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062285828] [2020-07-28 17:20:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-07-28 17:20:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:20:56,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-28 17:20:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:20:56,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:20:56,938 INFO L280 TraceCheckUtils]: 0: Hoare triple {13#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {18#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2020-07-28 17:20:56,964 INFO L280 TraceCheckUtils]: 1: Hoare triple {18#(= currentRoundingMode roundNearestTiesToEven)} havoc main_#res;havoc main_#t~ret1;f00_#in~a, f00_#in~b := ~convertDOUBLEToFLOAT(currentRoundingMode, ~fp.neg~DOUBLE(~to_fp~DOUBLE(currentRoundingMode, 7.62388928E8))), ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 7.62388928E8));havoc f00_#res;havoc f00_#t~mem0, f00_~a, f00_~b, f00_~sum~0, f00_~#m~0.base, f00_~#m~0.offset;f00_~a := f00_#in~a;f00_~b := f00_#in~b;f00_~sum~0 := ~fp.add~FLOAT(currentRoundingMode, f00_~a, f00_~b);call f00_~#m~0.base, f00_~#m~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(f00_~sum~0, f00_~#m~0.base, f00_~#m~0.offset, 4bv32);call f00_#t~mem0 := read~intINTTYPE4(f00_~#m~0.base, f00_~#m~0.offset, 4bv32); {22#(= (fp ((_ extract 31 31) |ULTIMATE.start_f00_#t~mem0|) ((_ extract 30 23) |ULTIMATE.start_f00_#t~mem0|) ((_ extract 22 0) |ULTIMATE.start_f00_#t~mem0|)) (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 762388928.0))) ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 762388928.0))))} is VALID [2020-07-28 17:20:56,967 INFO L280 TraceCheckUtils]: 2: Hoare triple {22#(= (fp ((_ extract 31 31) |ULTIMATE.start_f00_#t~mem0|) ((_ extract 30 23) |ULTIMATE.start_f00_#t~mem0|) ((_ extract 22 0) |ULTIMATE.start_f00_#t~mem0|)) (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 762388928.0))) ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 762388928.0))))} assume !(2147483648bv32 != f00_#t~mem0);havoc f00_#t~mem0; {14#false} is VALID [2020-07-28 17:20:56,967 INFO L280 TraceCheckUtils]: 3: Hoare triple {14#false} assume !false; {14#false} is VALID [2020-07-28 17:20:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:20:56,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:20:57,158 INFO L280 TraceCheckUtils]: 3: Hoare triple {14#false} assume !false; {14#false} is VALID [2020-07-28 17:20:57,159 INFO L280 TraceCheckUtils]: 2: Hoare triple {32#(not (= (bvadd |ULTIMATE.start_f00_#t~mem0| (_ bv2147483648 32)) (_ bv0 32)))} assume !(2147483648bv32 != f00_#t~mem0);havoc f00_#t~mem0; {14#false} is VALID [2020-07-28 17:20:57,172 INFO L280 TraceCheckUtils]: 1: Hoare triple {36#(forall ((|v_ULTIMATE.start_f00_#t~mem0_9| (_ BitVec 32))) (or (not (= (fp.add currentRoundingMode ((_ to_fp 8 24) currentRoundingMode (fp.neg ((_ to_fp 11 53) currentRoundingMode 762388928.0))) ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 762388928.0))) (fp ((_ extract 31 31) |v_ULTIMATE.start_f00_#t~mem0_9|) ((_ extract 30 23) |v_ULTIMATE.start_f00_#t~mem0_9|) ((_ extract 22 0) |v_ULTIMATE.start_f00_#t~mem0_9|)))) (not (= (_ bv2147483648 32) |v_ULTIMATE.start_f00_#t~mem0_9|))))} havoc main_#res;havoc main_#t~ret1;f00_#in~a, f00_#in~b := ~convertDOUBLEToFLOAT(currentRoundingMode, ~fp.neg~DOUBLE(~to_fp~DOUBLE(currentRoundingMode, 7.62388928E8))), ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 7.62388928E8));havoc f00_#res;havoc f00_#t~mem0, f00_~a, f00_~b, f00_~sum~0, f00_~#m~0.base, f00_~#m~0.offset;f00_~a := f00_#in~a;f00_~b := f00_#in~b;f00_~sum~0 := ~fp.add~FLOAT(currentRoundingMode, f00_~a, f00_~b);call f00_~#m~0.base, f00_~#m~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(f00_~sum~0, f00_~#m~0.base, f00_~#m~0.offset, 4bv32);call f00_#t~mem0 := read~intINTTYPE4(f00_~#m~0.base, f00_~#m~0.offset, 4bv32); {32#(not (= (bvadd |ULTIMATE.start_f00_#t~mem0| (_ bv2147483648 32)) (_ bv0 32)))} is VALID [2020-07-28 17:20:57,176 INFO L280 TraceCheckUtils]: 0: Hoare triple {13#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {36#(forall ((|v_ULTIMATE.start_f00_#t~mem0_9| (_ BitVec 32))) (or (not (= (fp.add currentRoundingMode ((_ to_fp 8 24) currentRoundingMode (fp.neg ((_ to_fp 11 53) currentRoundingMode 762388928.0))) ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 762388928.0))) (fp ((_ extract 31 31) |v_ULTIMATE.start_f00_#t~mem0_9|) ((_ extract 30 23) |v_ULTIMATE.start_f00_#t~mem0_9|) ((_ extract 22 0) |v_ULTIMATE.start_f00_#t~mem0_9|)))) (not (= (_ bv2147483648 32) |v_ULTIMATE.start_f00_#t~mem0_9|))))} is VALID [2020-07-28 17:20:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:20:57,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062285828] [2020-07-28 17:20:57,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:20:57,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-07-28 17:20:57,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299875892] [2020-07-28 17:20:57,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-07-28 17:20:57,187 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:20:57,191 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-28 17:20:57,240 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:20:57,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-28 17:20:57,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:20:57,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-28 17:20:57,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-28 17:20:57,254 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 6 states. [2020-07-28 17:20:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:20:57,396 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-07-28 17:20:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 17:20:57,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-07-28 17:20:57,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:20:57,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:20:57,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-07-28 17:20:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-28 17:20:57,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-07-28 17:20:57,406 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 14 transitions. [2020-07-28 17:20:57,449 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:20:57,456 INFO L225 Difference]: With dead ends: 15 [2020-07-28 17:20:57,456 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:20:57,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-28 17:20:57,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:20:57,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:20:57,483 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:20:57,484 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:57,484 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:57,484 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:57,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:20:57,485 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:20:57,485 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:20:57,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:20:57,486 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:20:57,486 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:57,486 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:20:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:20:57,487 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:20:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:20:57,487 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:20:57,487 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:20:57,487 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:20:57,487 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:20:57,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:20:57,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:20:57,489 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-07-28 17:20:57,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:20:57,490 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:20:57,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-28 17:20:57,490 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:20:57,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:20:57,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:20:57,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:20:57,761 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:20:57,761 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:20:57,761 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:20:57,762 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:20:57,762 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 103) no Hoare annotation was computed. [2020-07-28 17:20:57,762 INFO L264 CegarLoopResult]: At program point L112(lines 108 113) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-07-28 17:20:57,762 INFO L264 CegarLoopResult]: At program point L105(lines 99 106) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-07-28 17:20:57,762 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-28 17:20:57,762 INFO L268 CegarLoopResult]: For program point L103-1(line 103) no Hoare annotation was computed. [2020-07-28 17:20:57,763 INFO L268 CegarLoopResult]: For program point L103-3(line 103) no Hoare annotation was computed. [2020-07-28 17:20:57,767 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:20:57,767 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:20:57,768 WARN L170 areAnnotationChecker]: L103 has no Hoare annotation [2020-07-28 17:20:57,768 WARN L170 areAnnotationChecker]: L103 has no Hoare annotation [2020-07-28 17:20:57,768 WARN L170 areAnnotationChecker]: L103-1 has no Hoare annotation [2020-07-28 17:20:57,768 WARN L170 areAnnotationChecker]: L103-1 has no Hoare annotation [2020-07-28 17:20:57,769 WARN L170 areAnnotationChecker]: L103-3 has no Hoare annotation [2020-07-28 17:20:57,770 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:20:57,770 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:20:57,770 INFO L163 areAnnotationChecker]: CFG has 1 edges. 1 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:20:57,773 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:20:57,776 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:20:57,778 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:20:57,778 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:20:57,779 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:20:57,779 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:20:57,779 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:20:57,780 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:20:57,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:20:57 BoogieIcfgContainer [2020-07-28 17:20:57,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:20:57,782 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:20:57,782 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:20:57,782 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:20:57,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:20:56" (3/4) ... [2020-07-28 17:20:57,786 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:20:57,796 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-07-28 17:20:57,796 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-07-28 17:20:57,796 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:20:57,836 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:20:57,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:20:57,839 INFO L168 Benchmark]: Toolchain (without parser) took 1997.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -91.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:57,840 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:20:57,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.65 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:57,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:57,842 INFO L168 Benchmark]: Boogie Preprocessor took 27.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:57,843 INFO L168 Benchmark]: RCFGBuilder took 319.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:57,844 INFO L168 Benchmark]: TraceAbstraction took 1211.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 59.1 MB). Peak memory consumption was 59.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:20:57,844 INFO L168 Benchmark]: Witness Printer took 54.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:20:57,848 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 283.65 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 94.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -188.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 319.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1211.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 59.1 MB). Peak memory consumption was 59.1 MB. Max. memory is 11.5 GB. * Witness Printer took 54.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 103]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 108]: Loop Invariant [2020-07-28 17:20:57,857 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:20:57,857 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:20:57,857 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:20:57,858 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 99]: Loop Invariant [2020-07-28 17:20:57,858 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:20:57,858 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:20:57,859 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:20:57,859 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 1 QuantifiedInterpolants, 180 SizeOfPredicates, 10 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...